[deliverable/linux.git] / sound / soc / tegra / tegra_wm8903.c

/*
 * tegra_wm8903.c - Tegra machine ASoC driver for boards using WM8903 codec.
 *
 * Author: Stephen Warren <swarren@nvidia.com>
 * Copyright (C) 2010-2012 - NVIDIA, Inc.
 *
 * Based on code copyright/by:
 *
 * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
 *
 * Copyright 2007 Wolfson Microelectronics PLC.
 * Author: Graeme Gregory
 *         graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 */

#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/gpio.h>
#include <linux/of_gpio.h>

#include <sound/core.h>
#include <sound/jack.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>

#include "../codecs/wm8903.h"

#include "tegra_asoc_utils.h"

#define DRV_NAME "tegra-snd-wm8903"

struct tegra_wm8903 {
	int gpio_spkr_en;
	int gpio_hp_det;
	int gpio_hp_mute;
	int gpio_int_mic_en;
	int gpio_ext_mic_en;
	struct tegra_asoc_utils_data util_data;
};

static int tegra_wm8903_hw_params(struct snd_pcm_substream *substream,
					struct snd_pcm_hw_params *params)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	struct snd_soc_card *card = rtd->card;
	struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
	int srate, mclk;
	int err;

	srate = params_rate(params);
	switch (srate) {
	case 64000:
	case 88200:
	case 96000:
		mclk = 128 * srate;
		break;
	default:
		mclk = 256 * srate;
		break;
	}
	/* FIXME: Codec only requires >= 3MHz if OSR==0 */
	while (mclk < 6000000)
		mclk *= 2;

	err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
	if (err < 0) {
		dev_err(card->dev, "Can't configure clocks\n");
		return err;
	}

	err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
					SND_SOC_CLOCK_IN);
	if (err < 0) {
		dev_err(card->dev, "codec_dai clock not set\n");
		return err;
	}

	return 0;
}

static struct snd_soc_ops tegra_wm8903_ops = {
	.hw_params = tegra_wm8903_hw_params,
};

static struct snd_soc_jack tegra_wm8903_hp_jack;

static struct snd_soc_jack_pin tegra_wm8903_hp_jack_pins[] = {
	{
		.pin = "Headphone Jack",
		.mask = SND_JACK_HEADPHONE,
	},
};

static struct snd_soc_jack_gpio tegra_wm8903_hp_jack_gpio = {
	.name = "headphone detect",
	.report = SND_JACK_HEADPHONE,
	.debounce_time = 150,
	.invert = 1,
};

static struct snd_soc_jack tegra_wm8903_mic_jack;

static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = {
	{
		.pin = "Mic Jack",
		.mask = SND_JACK_MICROPHONE,
	},
};

static int tegra_wm8903_event_int_spk(struct snd_soc_dapm_widget *w,
					struct snd_kcontrol *k, int event)
{
	struct snd_soc_dapm_context *dapm = w->dapm;
	struct snd_soc_card *card = dapm->card;
	struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);

	if (!gpio_is_valid(machine->gpio_spkr_en))
		return 0;

	gpio_set_value_cansleep(machine->gpio_spkr_en,
				SND_SOC_DAPM_EVENT_ON(event));

	return 0;
}

static int tegra_wm8903_event_hp(struct snd_soc_dapm_widget *w,
					struct snd_kcontrol *k, int event)
{
	struct snd_soc_dapm_context *dapm = w->dapm;
	struct snd_soc_card *card = dapm->card;
	struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);

	if (!gpio_is_valid(machine->gpio_hp_mute))
		return 0;

	gpio_set_value_cansleep(machine->gpio_hp_mute,
				!SND_SOC_DAPM_EVENT_ON(event));

	return 0;
}

static const struct snd_soc_dapm_widget tegra_wm8903_dapm_widgets[] = {
	SND_SOC_DAPM_SPK("Int Spk", tegra_wm8903_event_int_spk),
	SND_SOC_DAPM_HP("Headphone Jack", tegra_wm8903_event_hp),
	SND_SOC_DAPM_MIC("Mic Jack", NULL),
};

static const struct snd_kcontrol_new tegra_wm8903_controls[] = {
	SOC_DAPM_PIN_SWITCH("Int Spk"),
};

static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd)
{
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	struct snd_soc_codec *codec = codec_dai->codec;
	struct snd_soc_card *card = rtd->card;
	struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);

	if (gpio_is_valid(machine->gpio_hp_det)) {
		tegra_wm8903_hp_jack_gpio.gpio = machine->gpio_hp_det;
		snd_soc_card_jack_new(rtd->card, "Headphone Jack",
				      SND_JACK_HEADPHONE, &tegra_wm8903_hp_jack,
				      tegra_wm8903_hp_jack_pins,
				      ARRAY_SIZE(tegra_wm8903_hp_jack_pins));
		snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack,
					1,
					&tegra_wm8903_hp_jack_gpio);
	}

	snd_soc_card_jack_new(rtd->card, "Mic Jack", SND_JACK_MICROPHONE,
			      &tegra_wm8903_mic_jack,
			      tegra_wm8903_mic_jack_pins,
			      ARRAY_SIZE(tegra_wm8903_mic_jack_pins));
	wm8903_mic_detect(codec, &tegra_wm8903_mic_jack, SND_JACK_MICROPHONE,
				0);

	snd_soc_dapm_force_enable_pin(&card->dapm, "MICBIAS");

	return 0;
}

static int tegra_wm8903_remove(struct snd_soc_card *card)
{
	struct snd_soc_pcm_runtime *rtd = &(card->rtd[0]);
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	struct snd_soc_codec *codec = codec_dai->codec;
	struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);

	if (gpio_is_valid(machine->gpio_hp_det)) {
		snd_soc_jack_free_gpios(&tegra_wm8903_hp_jack, 1,
					&tegra_wm8903_hp_jack_gpio);
	}

	wm8903_mic_detect(codec, NULL, 0, 0);

	return 0;
}

static struct snd_soc_dai_link tegra_wm8903_dai = {
	.name = "WM8903",
	.stream_name = "WM8903 PCM",
	.codec_dai_name = "wm8903-hifi",
	.init = tegra_wm8903_init,
	.ops = &tegra_wm8903_ops,
	.dai_fmt = SND_SOC_DAIFMT_I2S |
		   SND_SOC_DAIFMT_NB_NF |
		   SND_SOC_DAIFMT_CBS_CFS,
};

static struct snd_soc_card snd_soc_tegra_wm8903 = {
	.name = "tegra-wm8903",
	.owner = THIS_MODULE,
	.dai_link = &tegra_wm8903_dai,
	.num_links = 1,
	.remove = tegra_wm8903_remove,
	.controls = tegra_wm8903_controls,
	.num_controls = ARRAY_SIZE(tegra_wm8903_controls),
	.dapm_widgets = tegra_wm8903_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(tegra_wm8903_dapm_widgets),
	.fully_routed = true,
};

static int tegra_wm8903_driver_probe(struct platform_device *pdev)
{
	struct device_node *np = pdev->dev.of_node;
	struct snd_soc_card *card = &snd_soc_tegra_wm8903;
	struct tegra_wm8903 *machine;
	int ret;

	machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8903),
			       GFP_KERNEL);
	if (!machine) {
		dev_err(&pdev->dev, "Can't allocate tegra_wm8903 struct\n");
		return -ENOMEM;
	}

	card->dev = &pdev->dev;
	platform_set_drvdata(pdev, card);
	snd_soc_card_set_drvdata(card, machine);

	machine->gpio_spkr_en = of_get_named_gpio(np, "nvidia,spkr-en-gpios",
						  0);
	if (machine->gpio_spkr_en == -EPROBE_DEFER)
		return -EPROBE_DEFER;
	if (gpio_is_valid(machine->gpio_spkr_en)) {
		ret = devm_gpio_request_one(&pdev->dev, machine->gpio_spkr_en,
					    GPIOF_OUT_INIT_LOW, "spkr_en");
		if (ret) {
			dev_err(card->dev, "cannot get spkr_en gpio\n");
			return ret;
		}
	}

	machine->gpio_hp_mute = of_get_named_gpio(np, "nvidia,hp-mute-gpios",
						  0);
	if (machine->gpio_hp_mute == -EPROBE_DEFER)
		return -EPROBE_DEFER;
	if (gpio_is_valid(machine->gpio_hp_mute)) {
		ret = devm_gpio_request_one(&pdev->dev, machine->gpio_hp_mute,
					    GPIOF_OUT_INIT_HIGH, "hp_mute");
		if (ret) {
			dev_err(card->dev, "cannot get hp_mute gpio\n");
			return ret;
		}
	}

	machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
	if (machine->gpio_hp_det == -EPROBE_DEFER)
		return -EPROBE_DEFER;

	machine->gpio_int_mic_en = of_get_named_gpio(np,
						"nvidia,int-mic-en-gpios", 0);
	if (machine->gpio_int_mic_en == -EPROBE_DEFER)
		return -EPROBE_DEFER;
	if (gpio_is_valid(machine->gpio_int_mic_en)) {
		/* Disable int mic; enable signal is active-high */
		ret = devm_gpio_request_one(&pdev->dev,
					    machine->gpio_int_mic_en,
					    GPIOF_OUT_INIT_LOW, "int_mic_en");
		if (ret) {
			dev_err(card->dev, "cannot get int_mic_en gpio\n");
			return ret;
		}
	}

	machine->gpio_ext_mic_en = of_get_named_gpio(np,
						"nvidia,ext-mic-en-gpios", 0);
	if (machine->gpio_ext_mic_en == -EPROBE_DEFER)
		return -EPROBE_DEFER;
	if (gpio_is_valid(machine->gpio_ext_mic_en)) {
		/* Enable ext mic; enable signal is active-low */
		ret = devm_gpio_request_one(&pdev->dev,
					    machine->gpio_ext_mic_en,
					    GPIOF_OUT_INIT_LOW, "ext_mic_en");
		if (ret) {
			dev_err(card->dev, "cannot get ext_mic_en gpio\n");
			return ret;
		}
	}

	ret = snd_soc_of_parse_card_name(card, "nvidia,model");
	if (ret)
		goto err;

	ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
	if (ret)
		goto err;

	tegra_wm8903_dai.codec_of_node = of_parse_phandle(np,
						"nvidia,audio-codec", 0);
	if (!tegra_wm8903_dai.codec_of_node) {
		dev_err(&pdev->dev,
			"Property 'nvidia,audio-codec' missing or invalid\n");
		ret = -EINVAL;
		goto err;
	}

	tegra_wm8903_dai.cpu_of_node = of_parse_phandle(np,
			"nvidia,i2s-controller", 0);
	if (!tegra_wm8903_dai.cpu_of_node) {
		dev_err(&pdev->dev,
			"Property 'nvidia,i2s-controller' missing or invalid\n");
		ret = -EINVAL;
		goto err;
	}

	tegra_wm8903_dai.platform_of_node = tegra_wm8903_dai.cpu_of_node;

	ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
	if (ret)
		goto err;

	ret = snd_soc_register_card(card);
	if (ret) {
		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
			ret);
		goto err_fini_utils;
	}

	return 0;

err_fini_utils:
	tegra_asoc_utils_fini(&machine->util_data);
err:
	return ret;
}

static int tegra_wm8903_driver_remove(struct platform_device *pdev)
{
	struct snd_soc_card *card = platform_get_drvdata(pdev);
	struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);

	snd_soc_unregister_card(card);

	tegra_asoc_utils_fini(&machine->util_data);

	return 0;
}

static const struct of_device_id tegra_wm8903_of_match[] = {
	{ .compatible = "nvidia,tegra-audio-wm8903", },
	{},
};

static struct platform_driver tegra_wm8903_driver = {
	.driver = {
		.name = DRV_NAME,
		.pm = &snd_soc_pm_ops,
		.of_match_table = tegra_wm8903_of_match,
	},
	.probe = tegra_wm8903_driver_probe,
	.remove = tegra_wm8903_driver_remove,
};
module_platform_driver(tegra_wm8903_driver);

MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:" DRV_NAME);
MODULE_DEVICE_TABLE(of, tegra_wm8903_of_match);
Commit	Line	Data
a8bf1ba1	1	/*
dc0a50af	2	* tegra_wm8903.c - Tegra machine ASoC driver for boards using WM8903 codec.
a8bf1ba1 SW	3	*
a8bf1ba1 SW	4	* Author: Stephen Warren <swarren@nvidia.com>
518de86b	5	* Copyright (C) 2010-2012 - NVIDIA, Inc.
a8bf1ba1 SW	6	*
	7	* Based on code copyright/by:
	8	*
	9	* (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
	10	*
	11	* Copyright 2007 Wolfson Microelectronics PLC.
	12	* Author: Graeme Gregory
	13	* graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
	14	*
	15	* This program is free software; you can redistribute it and/or
	16	* modify it under the terms of the GNU General Public License
	17	* version 2 as published by the Free Software Foundation.
	18	*
	19	* This program is distributed in the hope that it will be useful, but
	20	* WITHOUT ANY WARRANTY; without even the implied warranty of
	21	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	22	* General Public License for more details.
	23	*
	24	* You should have received a copy of the GNU General Public License
	25	* along with this program; if not, write to the Free Software
	26	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
	27	* 02110-1301 USA
	28	*
	29	*/
	30
a8bf1ba1	31	#include <linux/module.h>
72de2b1a SW	32	#include <linux/platform_device.h>
72de2b1a SW	33	#include <linux/slab.h>
6e267645	34	#include <linux/gpio.h>
07cdf36d	35	#include <linux/of_gpio.h>
6e267645	36
a8bf1ba1	37	#include <sound/core.h>
f7d3e403	38	#include <sound/jack.h>
a8bf1ba1 SW	39	#include <sound/pcm.h>
	40	#include <sound/pcm_params.h>
	41	#include <sound/soc.h>
	42
41b5f9b3 SW	43	#include "../codecs/wm8903.h"
41b5f9b3 SW	44
a8bf1ba1 SW	45	#include "tegra_asoc_utils.h"
a8bf1ba1 SW	46
7b33af25	47	#define DRV_NAME "tegra-snd-wm8903"
a8bf1ba1	48
dc0a50af	49	struct tegra_wm8903 {
8f5f5e0f SW	50	int gpio_spkr_en;
	51	int gpio_hp_det;
	52	int gpio_hp_mute;
	53	int gpio_int_mic_en;
	54	int gpio_ext_mic_en;
d64e57ce	55	struct tegra_asoc_utils_data util_data;
72de2b1a	56	};
a8bf1ba1	57
dc0a50af	58	static int tegra_wm8903_hw_params(struct snd_pcm_substream *substream,
a8bf1ba1 SW	59	struct snd_pcm_hw_params *params)
	60	{
	61	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	62	struct snd_soc_dai *codec_dai = rtd->codec_dai;
093c4e5c	63	struct snd_soc_card *card = rtd->card;
dc0a50af	64	struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
07541396	65	int srate, mclk;
a8bf1ba1 SW	66	int err;
	67
	68	srate = params_rate(params);
	69	switch (srate) {
	70	case 64000:
	71	case 88200:
	72	case 96000:
	73	mclk = 128 * srate;
	74	break;
	75	default:
	76	mclk = 256 * srate;
	77	break;
	78	}
	79	/* FIXME: Codec only requires >= 3MHz if OSR==0 */
	80	while (mclk < 6000000)
	81	mclk *= 2;
	82
07541396	83	err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
a8bf1ba1	84	if (err < 0) {
c244d477	85	dev_err(card->dev, "Can't configure clocks\n");
a8bf1ba1 SW	86	return err;
	87	}
	88
07541396 SW	89	err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
	90	SND_SOC_CLOCK_IN);
	91	if (err < 0) {
	92	dev_err(card->dev, "codec_dai clock not set\n");
	93	return err;
a8bf1ba1 SW	94	}
	95
	96	return 0;
	97	}
	98
dc0a50af SW	99	static struct snd_soc_ops tegra_wm8903_ops = {
dc0a50af SW	100	.hw_params = tegra_wm8903_hw_params,
a8bf1ba1 SW	101	};
a8bf1ba1 SW	102
dc0a50af	103	static struct snd_soc_jack tegra_wm8903_hp_jack;
f7d3e403	104
dc0a50af	105	static struct snd_soc_jack_pin tegra_wm8903_hp_jack_pins[] = {
f7d3e403 SW	106	{
	107	.pin = "Headphone Jack",
	108	.mask = SND_JACK_HEADPHONE,
	109	},
	110	};
	111
3eb25f99 SW	112	static struct snd_soc_jack_gpio tegra_wm8903_hp_jack_gpio = {
	113	.name = "headphone detect",
	114	.report = SND_JACK_HEADPHONE,
	115	.debounce_time = 150,
	116	.invert = 1,
f7d3e403 SW	117	};
f7d3e403 SW	118
dc0a50af	119	static struct snd_soc_jack tegra_wm8903_mic_jack;
41b5f9b3	120
dc0a50af	121	static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = {
41b5f9b3 SW	122	{
	123	.pin = "Mic Jack",
	124	.mask = SND_JACK_MICROPHONE,
	125	},
	126	};
	127
dc0a50af	128	static int tegra_wm8903_event_int_spk(struct snd_soc_dapm_widget *w,
6e267645 SW	129	struct snd_kcontrol *k, int event)
6e267645 SW	130	{
a32955db SW	131	struct snd_soc_dapm_context *dapm = w->dapm;
a32955db SW	132	struct snd_soc_card *card = dapm->card;
dc0a50af	133	struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
6e267645	134
8f5f5e0f	135	if (!gpio_is_valid(machine->gpio_spkr_en))
773b1d3d SW	136	return 0;
773b1d3d SW	137
8f5f5e0f	138	gpio_set_value_cansleep(machine->gpio_spkr_en,
f9eabc3d	139	SND_SOC_DAPM_EVENT_ON(event));
6e267645 SW	140
	141	return 0;
	142	}
	143
773b1d3d SW	144	static int tegra_wm8903_event_hp(struct snd_soc_dapm_widget *w,
	145	struct snd_kcontrol *k, int event)
	146	{
a32955db SW	147	struct snd_soc_dapm_context *dapm = w->dapm;
a32955db SW	148	struct snd_soc_card *card = dapm->card;
773b1d3d	149	struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
773b1d3d	150
8f5f5e0f	151	if (!gpio_is_valid(machine->gpio_hp_mute))
773b1d3d SW	152	return 0;
773b1d3d SW	153
8f5f5e0f	154	gpio_set_value_cansleep(machine->gpio_hp_mute,
773b1d3d SW	155	!SND_SOC_DAPM_EVENT_ON(event));
	156
	157	return 0;
	158	}
	159
dc0a50af SW	160	static const struct snd_soc_dapm_widget tegra_wm8903_dapm_widgets[] = {
dc0a50af SW	161	SND_SOC_DAPM_SPK("Int Spk", tegra_wm8903_event_int_spk),
773b1d3d	162	SND_SOC_DAPM_HP("Headphone Jack", tegra_wm8903_event_hp),
62ffac4d SW	163	SND_SOC_DAPM_MIC("Mic Jack", NULL),
	164	};
	165
dc0a50af	166	static const struct snd_kcontrol_new tegra_wm8903_controls[] = {
3d8bc390 SW	167	SOC_DAPM_PIN_SWITCH("Int Spk"),
	168	};
	169
dc0a50af	170	static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd)
62ffac4d	171	{
40db77a0 SW	172	struct snd_soc_dai *codec_dai = rtd->codec_dai;
40db77a0 SW	173	struct snd_soc_codec *codec = codec_dai->codec;
093c4e5c	174	struct snd_soc_card *card = rtd->card;
dc0a50af	175	struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
bf1b1328	176
8f5f5e0f SW	177	if (gpio_is_valid(machine->gpio_hp_det)) {
8f5f5e0f SW	178	tegra_wm8903_hp_jack_gpio.gpio = machine->gpio_hp_det;
7ba8cbb2 LPC	179	snd_soc_card_jack_new(rtd->card, "Headphone Jack",
	180	SND_JACK_HEADPHONE, &tegra_wm8903_hp_jack,
	181	tegra_wm8903_hp_jack_pins,
	182	ARRAY_SIZE(tegra_wm8903_hp_jack_pins));
773b1d3d SW	183	snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack,
	184	1,
	185	&tegra_wm8903_hp_jack_gpio);
	186	}
f7d3e403	187
7ba8cbb2 LPC	188	snd_soc_card_jack_new(rtd->card, "Mic Jack", SND_JACK_MICROPHONE,
	189	&tegra_wm8903_mic_jack,
	190	tegra_wm8903_mic_jack_pins,
	191	ARRAY_SIZE(tegra_wm8903_mic_jack_pins));
dc0a50af SW	192	wm8903_mic_detect(codec, &tegra_wm8903_mic_jack, SND_JACK_MICROPHONE,
dc0a50af SW	193	0);
41b5f9b3	194
14e954f5	195	snd_soc_dapm_force_enable_pin(&card->dapm, "MICBIAS");
41b5f9b3	196
62ffac4d SW	197	return 0;
	198	}
	199
3419ae78 SW	200	static int tegra_wm8903_remove(struct snd_soc_card *card)
	201	{
	202	struct snd_soc_pcm_runtime *rtd = &(card->rtd[0]);
	203	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	204	struct snd_soc_codec *codec = codec_dai->codec;
fb6b8e71 SW	205	struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
	206
	207	if (gpio_is_valid(machine->gpio_hp_det)) {
	208	snd_soc_jack_free_gpios(&tegra_wm8903_hp_jack, 1,
	209	&tegra_wm8903_hp_jack_gpio);
	210	}
3419ae78 SW	211
	212	wm8903_mic_detect(codec, NULL, 0, 0);
	213
	214	return 0;
	215	}
	216
dc0a50af	217	static struct snd_soc_dai_link tegra_wm8903_dai = {
a8bf1ba1 SW	218	.name = "WM8903",
a8bf1ba1 SW	219	.stream_name = "WM8903 PCM",
a8bf1ba1	220	.codec_dai_name = "wm8903-hifi",
dc0a50af SW	221	.init = tegra_wm8903_init,
dc0a50af SW	222	.ops = &tegra_wm8903_ops,
408dafc4 SW	223	.dai_fmt = SND_SOC_DAIFMT_I2S \|
	224	SND_SOC_DAIFMT_NB_NF \|
	225	SND_SOC_DAIFMT_CBS_CFS,
a8bf1ba1 SW	226	};
a8bf1ba1 SW	227
dc0a50af SW	228	static struct snd_soc_card snd_soc_tegra_wm8903 = {
dc0a50af SW	229	.name = "tegra-wm8903",
b16eaf9f	230	.owner = THIS_MODULE,
dc0a50af	231	.dai_link = &tegra_wm8903_dai,
a8bf1ba1	232	.num_links = 1,
3419ae78	233	.remove = tegra_wm8903_remove,
dea8b6ee SW	234	.controls = tegra_wm8903_controls,
	235	.num_controls = ARRAY_SIZE(tegra_wm8903_controls),
	236	.dapm_widgets = tegra_wm8903_dapm_widgets,
	237	.num_dapm_widgets = ARRAY_SIZE(tegra_wm8903_dapm_widgets),
6e5fdba9	238	.fully_routed = true,
a8bf1ba1 SW	239	};
a8bf1ba1 SW	240
4652a0d0	241	static int tegra_wm8903_driver_probe(struct platform_device *pdev)
a8bf1ba1	242	{
f51022f1	243	struct device_node *np = pdev->dev.of_node;
dc0a50af SW	244	struct snd_soc_card *card = &snd_soc_tegra_wm8903;
dc0a50af SW	245	struct tegra_wm8903 *machine;
a8bf1ba1 SW	246	int ret;
a8bf1ba1 SW	247
e4e4c18a SW	248	machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8903),
e4e4c18a SW	249	GFP_KERNEL);
dc0a50af SW	250	if (!machine) {
dc0a50af SW	251	dev_err(&pdev->dev, "Can't allocate tegra_wm8903 struct\n");
8f5f5e0f	252	return -ENOMEM;
a8bf1ba1	253	}
a8bf1ba1	254
72de2b1a SW	255	card->dev = &pdev->dev;
72de2b1a SW	256	platform_set_drvdata(pdev, card);
dc0a50af	257	snd_soc_card_set_drvdata(card, machine);
a8bf1ba1	258
8f5f5e0f SW	259	machine->gpio_spkr_en = of_get_named_gpio(np, "nvidia,spkr-en-gpios",
	260	0);
	261	if (machine->gpio_spkr_en == -EPROBE_DEFER)
	262	return -EPROBE_DEFER;
	263	if (gpio_is_valid(machine->gpio_spkr_en)) {
	264	ret = devm_gpio_request_one(&pdev->dev, machine->gpio_spkr_en,
e2d287c1	265	GPIOF_OUT_INIT_LOW, "spkr_en");
f51022f1 SW	266	if (ret) {
	267	dev_err(card->dev, "cannot get spkr_en gpio\n");
	268	return ret;
	269	}
f51022f1 SW	270	}
f51022f1 SW	271
8f5f5e0f SW	272	machine->gpio_hp_mute = of_get_named_gpio(np, "nvidia,hp-mute-gpios",
	273	0);
	274	if (machine->gpio_hp_mute == -EPROBE_DEFER)
	275	return -EPROBE_DEFER;
	276	if (gpio_is_valid(machine->gpio_hp_mute)) {
	277	ret = devm_gpio_request_one(&pdev->dev, machine->gpio_hp_mute,
e2d287c1	278	GPIOF_OUT_INIT_HIGH, "hp_mute");
f51022f1 SW	279	if (ret) {
	280	dev_err(card->dev, "cannot get hp_mute gpio\n");
	281	return ret;
	282	}
f51022f1 SW	283	}
f51022f1 SW	284
8f5f5e0f SW	285	machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
	286	if (machine->gpio_hp_det == -EPROBE_DEFER)
	287	return -EPROBE_DEFER;
	288
	289	machine->gpio_int_mic_en = of_get_named_gpio(np,
	290	"nvidia,int-mic-en-gpios", 0);
	291	if (machine->gpio_int_mic_en == -EPROBE_DEFER)
	292	return -EPROBE_DEFER;
	293	if (gpio_is_valid(machine->gpio_int_mic_en)) {
e2d287c1	294	/* Disable int mic; enable signal is active-high */
8f5f5e0f SW	295	ret = devm_gpio_request_one(&pdev->dev,
8f5f5e0f SW	296	machine->gpio_int_mic_en,
e2d287c1	297	GPIOF_OUT_INIT_LOW, "int_mic_en");
f51022f1 SW	298	if (ret) {
	299	dev_err(card->dev, "cannot get int_mic_en gpio\n");
	300	return ret;
	301	}
f51022f1 SW	302	}
f51022f1 SW	303
8f5f5e0f SW	304	machine->gpio_ext_mic_en = of_get_named_gpio(np,
	305	"nvidia,ext-mic-en-gpios", 0);
	306	if (machine->gpio_ext_mic_en == -EPROBE_DEFER)
	307	return -EPROBE_DEFER;
	308	if (gpio_is_valid(machine->gpio_ext_mic_en)) {
e2d287c1	309	/* Enable ext mic; enable signal is active-low */
8f5f5e0f SW	310	ret = devm_gpio_request_one(&pdev->dev,
8f5f5e0f SW	311	machine->gpio_ext_mic_en,
e2d287c1	312	GPIOF_OUT_INIT_LOW, "ext_mic_en");
f51022f1 SW	313	if (ret) {
	314	dev_err(card->dev, "cannot get ext_mic_en gpio\n");
	315	return ret;
	316	}
f51022f1 SW	317	}
f51022f1 SW	318
8f5f5e0f SW	319	ret = snd_soc_of_parse_card_name(card, "nvidia,model");
	320	if (ret)
	321	goto err;
	322
	323	ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
	324	if (ret)
	325	goto err;
	326
	327	tegra_wm8903_dai.codec_of_node = of_parse_phandle(np,
	328	"nvidia,audio-codec", 0);
	329	if (!tegra_wm8903_dai.codec_of_node) {
	330	dev_err(&pdev->dev,
	331	"Property 'nvidia,audio-codec' missing or invalid\n");
	332	ret = -EINVAL;
	333	goto err;
	334	}
	335
	336	tegra_wm8903_dai.cpu_of_node = of_parse_phandle(np,
	337	"nvidia,i2s-controller", 0);
	338	if (!tegra_wm8903_dai.cpu_of_node) {
	339	dev_err(&pdev->dev,
	340	"Property 'nvidia,i2s-controller' missing or invalid\n");
	341	ret = -EINVAL;
	342	goto err;
	343	}
	344
	345	tegra_wm8903_dai.platform_of_node = tegra_wm8903_dai.cpu_of_node;
	346
07cdf36d SW	347	ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
07cdf36d SW	348	if (ret)
518de86b	349	goto err;
07cdf36d	350
72de2b1a	351	ret = snd_soc_register_card(card);
a8bf1ba1	352	if (ret) {
72de2b1a	353	dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
a8bf1ba1	354	ret);
acb8303f	355	goto err_fini_utils;
a8bf1ba1 SW	356	}
	357
	358	return 0;
	359
acb8303f	360	err_fini_utils:
dc0a50af	361	tegra_asoc_utils_fini(&machine->util_data);
e4e4c18a	362	err:
a8bf1ba1 SW	363	return ret;
a8bf1ba1 SW	364	}
a8bf1ba1	365
4652a0d0	366	static int tegra_wm8903_driver_remove(struct platform_device *pdev)
a8bf1ba1	367	{
72de2b1a	368	struct snd_soc_card *card = platform_get_drvdata(pdev);
dc0a50af	369	struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
72de2b1a	370
29591ed4 SW	371	snd_soc_unregister_card(card);
	372
	373	tegra_asoc_utils_fini(&machine->util_data);
6e267645	374
72de2b1a SW	375	return 0;
	376	}
	377
f6e65744	378	static const struct of_device_id tegra_wm8903_of_match[] = {
07cdf36d SW	379	{ .compatible = "nvidia,tegra-audio-wm8903", },
	380	{},
	381	};
	382
dc0a50af	383	static struct platform_driver tegra_wm8903_driver = {
72de2b1a SW	384	.driver = {
72de2b1a SW	385	.name = DRV_NAME,
deb2607e	386	.pm = &snd_soc_pm_ops,
07cdf36d	387	.of_match_table = tegra_wm8903_of_match,
72de2b1a	388	},
dc0a50af	389	.probe = tegra_wm8903_driver_probe,
4652a0d0	390	.remove = tegra_wm8903_driver_remove,
72de2b1a	391	};
e4e4c18a	392	module_platform_driver(tegra_wm8903_driver);
a8bf1ba1 SW	393
a8bf1ba1 SW	394	MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
dc0a50af	395	MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver");
a8bf1ba1	396	MODULE_LICENSE("GPL");
8eb34207	397	MODULE_ALIAS("platform:" DRV_NAME);
07cdf36d	398	MODULE_DEVICE_TABLE(of, tegra_wm8903_of_match);